George Bush is shown with wife Barbara in 1945. The Associated Press

Barbara Pierce, the future Barbara Bush, is shown in her graduation photo from Ashley Hall, a finishing school in Charleston, S.C., in 1943. The Associated Press

George Bush is shown at age 14 or 15 in 1939. Bush was born in 1924 in Milton, Mass., and grew up in Greenwich, Connecticut. He graduated from Phillips Academy at Andover, Mass., in 1942, and joined the United States Navy to fight in World War II.

George Bush, candidate for the Republican nomination for the U.S. Senate, gets returns by phone at his headquarters in Houston, Saturday, June 6, 1964 as his wife Barbara, beams her pleasure at the news. Bush was leading his opponent Jack Cox in the run-off primary. Bush will face Sen. Ralph Yarborough (D-Tex) in the November general election if his lead holds and he is the winner. The Associated Press

Republican presidential candidate George Bush and his wife Barbara stand together on the podium during the finale of the Republican National Convention in New Orleans, Aug. 18, 1988. The Associated Press

U.S. President George Bush and Mrs. Barbara Bush attend one of the Inaugural Balls, Friday, Jan. 21, 1989, night at the D.C Armory in Washington. The Associated Press

Former President George H. W. Bush, wife Barbara Bush, and granddaughter Lauren Bush enjoy festivities at Walker's Point in Kennebunkport during the dedication of an anchor and plaque in his honor at the overlook there.

Former President George H.W. Bush, with his wife, Barbara, speaks with former baseball teammate Richard Phelps during a visit to Phillips Academy in Andover, Mass.

Former President George H.W. Bush and his wife Barbara Bush in March 2015.

Former President George H.W. Bush and his wife, Barbara.